# Fuuuga vs Underwater Stopwatch & Timer

The clearest difference is in-app purchases: Underwater Stopwatch & Timer at none against Fuuuga's 1. Underwater Stopwatch & Timer also leads on ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. Fuuuga sells 1 one-off in-app purchase. Underwater Stopwatch & Timer asks for nothing beyond the download.

Fuuuga ships an update every 3 days, Underwater Stopwatch & Timer every 5 days. The most recent releases landed on October 25, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Fuuuga | Underwater Stopwatch & Timer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 3 days** | Every 5 days |
| Size | 102 MB | 4 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Tomoki Sasaki](https://appshunter.io/developer/6780824620) | [Softuki SRL](https://appshunter.io/developer/6783263834) |

## What reviewers say

### Fuuuga

[App page](https://appshunter.io/ios/app/fuuuga-multi-interval-tracker/id6780824618)

**Features:** Apple Watch app

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Fuuuga+ | $1.99 | one-time |


### Underwater Stopwatch & Timer

[App page](https://appshunter.io/ios/app/underwater-stopwatch-and-timer/id6783263832)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Fuuuga free?

Fuuuga is free to download, with in-app purchases available.

### Is Underwater Stopwatch & Timer free?

Underwater Stopwatch & Timer is free to download, with no in-app purchases.

### Do Fuuuga or Underwater Stopwatch & Timer have ads?

Fuuuga shows ads; Underwater Stopwatch & Timer does not.

### Which is updated more often, Fuuuga or Underwater Stopwatch & Timer?

Fuuuga ships an update every 3 days, and Underwater Stopwatch & Timer every 5 days. Most recently, Fuuuga was updated on October 25, 2026 and Underwater Stopwatch & Timer on October 31, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*